<template>
  <div>
      <!-- 面包屑导航区域 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
         <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
         <el-breadcrumb-item>用户管理</el-breadcrumb-item>
         <el-breadcrumb-item>用户列表</el-breadcrumb-item>
      </el-breadcrumb>
      <!-- 卡片视图区域 -->
      <el-card>
          <!-- 搜索与添加区域 -->
          <el-row :gutter="20">
              <el-col :span="8">
                  <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                      <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                  </el-input>
              </el-col>
              <el-col :span="4">
                  <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
              </el-col>
          </el-row>
          <!-- 用户列表区域 -->
          <el-table :data="userlist" border stripe>
              <el-table-column label="#" type="index"></el-table-column>
              <el-table-column label="姓名" prop="username"></el-table-column>
              <el-table-column label="邮箱" prop="email"></el-table-column>
              <el-table-column label="电话" prop="mobile"></el-table-column>
              <el-table-column label="角色" prop="role_name"></el-table-column>
              <el-table-column label="状态">
                  <template slot-scope="scope">
                      <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                      </el-switch>
                  </template>
              </el-table-column>
              <el-table-column label="操作">
                  <template slot-scope="scope">
                      <!-- 修改按钮 -->
                     <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                     <!-- 删除按钮 -->
                     <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                     <!-- 分配角色按钮 -->
                     <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                           <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                     </el-tooltip>
                  </template>
              </el-table-column>
          </el-table>
          <!-- 分页区域 -->
          <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
          </el-pagination>
       </el-card>
       <!-- 添加用户的对话框 -->
       <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
           <!-- 内容主体区域 -->
           <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
              <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
              </el-form-item>
              <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
              </el-form-item>
           </el-form>
           <!-- 底部区域 -->
           <span slot="footer" class="dialog-footer">
             <el-button @click="addDialogVisible = false">取 消</el-button>
             <el-button type="primary" @click="addUser">确 定</el-button>
           </span>
       </el-dialog>
       <!-- 修改用户的对话框 -->
       <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
           <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
              <el-form-item label="用户名">
                 <el-input v-model="editForm.username" disabled></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                 <el-input v-model="editForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机号" prop="mobile">
                 <el-input v-model="editForm.mobile"></el-input>
              </el-form-item>
            </el-form>
           <span slot="footer" class="dialog-footer">
              <el-button @click="editDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="editUserInfo">确 定</el-button>
           </span>
       </el-dialog>
       <!-- 分配角色的对话框 -->
       <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色:
                     <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                         v-for="item in rolesList"
                         :key="item.id"
                         :label="item.roleName"
                         :value="item.id">
                        </el-option>
                     </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                   <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                   <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
       </el-dialog>
  </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) {
                // 合法的邮箱
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)) {
                // 合法的手机号
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前的页数
                pagenum: 1,
                // 当前每页显示多少条数据
                pagesize: 2
            },
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: "",
                password: "",
                email: "",
                mobile: ""
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名',trigger: 'blur'},
                    { min: 3, max: 10, message: '用户名的长度在3~10个字符之间',trigger: 'blur'}
                ],
                password: [
                    { required: true, message: '请输入密码',trigger: 'blur'},
                    { min: 6, max: 15, message: '密码的长度在6~15个字符之间',trigger: 'blur'}
                ],
                email: [
                    { required: true, message: '请输入邮箱',trigger: 'blur'},
                    { validator: checkEmail,trigger: 'blur'}
                ],
                mobile: [
                    { required: true, message: '请输入手机号',trigger: 'blur'},
                    { validator: checkMobile,trigger: 'blur'}
                ]
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 修改表单的验证规则对象
            editFormRules: {
                email: [
                    { required: true, message: '请输入邮箱',trigger: 'blur'},
                    { validator: checkEmail,trigger: 'blur'}
                ],
                mobile: [
                    { required: true, message: '请输入手机号',trigger: 'blur'},
                    { validator: checkMobile,trigger: 'blur'}
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色id值
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res} = await this.$http.get('users', { params: this.queryInfo })
            if (res.meta.status !== 200) {
                return this.$messsage.console.error('获取用户列表失败!');
            }
            this.userlist = res.data.users
            this.total = res.data.total
            console.log(res);
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSice) {
            // console.log(newSice);
            this.queryInfo.pagesize = newSice
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage) {
            // console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        async userStateChanged(userinfo) {
            console.log(userinfo)
            const { data: res } = await this.$http.put(
                `users/${userinfo.id}/state/${userinfo.mg_state}`
            )
            if (res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败!')
            }
            this.$message.success('更新用户状态成功!')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮,添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                // 发起添加用户的网络请求
                const {data: res} = await this.$http.post('users',this.addForm)
                if (res.meta.status !== 201) {
                    this.$message.error('添加用户失败!')
                }
                this.$message.success('添加用户成功!')
                // 隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重新获取用户列表数据
                this.getUserList()
            })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
            const {data: res} = await this.$http.get('users/' + id)
            if (res.meta.status !==200) {
                return this.$message.error('查询用户信息失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
            // console.log(id);
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                // 发起修改用户的网络请求
                const {data: res} = await this.$http.put('users/' + this.editForm.id, {
                    email: this.editForm.email, 
                    mobile: this.editForm.mobile
                    })
                if (res.meta.status !== 200) {
                    this.$message.error('修改用户信息失败!')
                }
                // 隐藏修改用户的对话框
                this.editDialogVisible = false
                // 重新获取用户列表数据
                this.getUserList()
                this.$message.success('修改用户信息成功!')
            })
        },
        // 根据id删除对应的用户信息
        async removeUserById(id) {
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消删除，则返回值为字符串 cancel
            // console.log(confirmResult)
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            // console.log('确认了删除');
            const { data: res } = await this.$http.delete('users/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败!')
            }
            this.$message.success('删除用户成功!')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo
            // 在展示对话框之前，获取所有角色的列表
            const { data: res} = await this.$http.get('roles')
            if(res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败!')
            }
            this.rolesList = res.data

            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色!')
            }
            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid:this.selectedRoleId
            })
            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败!')
            }
            this.$message.success('更新角色成功!')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>
<style>

</style>